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Product Detailed Parameters
- Description：IC REG BUCK ADJ 800MA DL 24TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：2
- Voltage - Input (Min)：3.8V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：36V
- Current - Output：800mA
- Frequency - Switching：500kHz ~ 2.1MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：24-TSSOP
- Grade：-
- Qualification：-
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Overview
The LT3688EFE is a dual-channel monolithic step-down switching regulator manufactured by Analog Devices Inc. It operates from an input voltage range of 3.8V to 36V and withstands transients up to 60V. Each channel provides an adjustable output voltage with a maximum current of 800mA. The device integrates two power-on reset timers and a watchdog timer for system protection. It utilizes a fixed 2.2MHz switching frequency and features a low quiescent current of 65µA. The component is housed in a 24-lead TSSOP package with an exposed pad, suitable for surface mount installation.
Feature Summary
- Integrates dual independent buck converters with dedicated power-on reset generators
- Includes a built-in watchdog timer for enhanced system reliability
- Supports high input voltage operation with robust transient immunity
Applications
- Industrial control systems requiring isolated or non-isolated dual rails
- Embedded systems needing sequenced power-up states
- Automotive electronics operating within specified voltage ranges
Procurement Notes
Verify the specific suffix and tape/reel versus tube packaging options available through authorized distributors. Confirm RoHS compliance status and lead times directly with the manufacturer or certified suppliers before finalizing procurement plans. Ensure the ordering part number matches the required package variant.
Selection Notes
Select this component when dual synchronous buck outputs are required alongside integrated reset and watchdog functionalities. It is appropriate for designs demanding a fixed high-frequency operation to minimize passive component size. Consider the thermal performance of the TSSOP-EP package for the expected load conditions.
Part Context
This part belongs to the LT3688 family of dual step-down regulators. It shares architectural similarities with other Analog Devices PMICs but is distinct in its combination of dual 800mA channels and integrated timing protection features. The EFE suffix denotes the specific 24-lead TSSOP package configuration.
Replacement Considerations
LT3688IUF#PBF is a documented alternative offering identical electrical specifications in a 24-WFQFN package. Verify pin-to-pin compatibility and thermal dissipation requirements when substituting between the TSSOP and QFN footprints.
